Patents by Inventor David Henderson

David Henderson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10284118
    Abstract: A two-axis angular pointing device includes a pivot bearing configured to support a payload. A first actuator is positioned to contact the payload at a first drive point. A second actuator is positioned to contact the payload at a second drive point. The first actuator is configured to generate a first movement of the payload in a direction substantially orthogonal to a plane defined by a center of the pivot bearing, the first drive point, and the second drive point to cause the payload to rotate around a first rotation axis. The second actuator is configured to generate a second movement of the payload at the second drive point in the direction substantially orthogonal to the plane to cause the payload to rotate around a second rotation axis. A method of making a two-axis angular pointing device is also disclosed.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: May 7, 2019
    Assignee: New Scale Technologies, Inc.
    Inventors: David A. Henderson, Qin Xu
  • Patent number: 10245642
    Abstract: A method for producing a metal powder includes maintaining molten reducing metal in a sealed reaction vessel that is substantially free of oxygen and water, establishing a vortex in the molten reducing metal, introducing a metal halide into the vortex so that the molten reducing metal is in a stoichiometric excess to the metal halide, thereby producing metal particles and salt, removing unreacted reducing metal, removing the salt, and recovering the metal powder. The molten reducing metal can be a Group I metal, a Group II metal, or aluminum.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: April 2, 2019
    Assignee: Nanoscale Powders LLC
    Inventors: David Henderson, Andrew Matheson, Richard Van Lieshout, Donald Finnerty, John W. Koenitzer
  • Patent number: 10187037
    Abstract: A stick-slip stage device includes a carriage assembly configured to support a payload, the carriage assembly comprising at least three piezoelectric stick-slip actuators each having one or more contact points. At least two rails are positioned on opposing sides of the carriage assembly and configured to interact with one or more of the contact points to form a guideway for movement of the carriage assembly. A fixed structure connects the at least two rails and is configured to generate a friction force between the at least two rails and one or more of the contact points of the at least three piezoelectric stick-slip actuators. A method of making a stick-slip stage device is also disclosed.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: January 22, 2019
    Assignee: New Scale Technologies, Inc.
    Inventors: David A. Henderson, Qin Xu, Daniele Piazza
  • Publication number: 20180371858
    Abstract: A reclosable multi-zone isolation tool including a piston assembly with a lock out feature. The tool has an outer and inner tubular having an annular flow path defined there between, and a central flow path defined by the inner tubular. The annular flow path is in fluid communication with the first zone, while the central flow path is in fluid communication with the second zone. A sleeve is positioned in the annular flow path and axially moveable between an open and closed position. A mandrel is positioned within the inner tubular and coupled to the sleeve to actuate the sleeve between the open and closed position. A pressure responsive piston assembly is coupled to the mandrel in order to actuate the sleeve to the open position. Once in the open position, the piston assembly is “locked out,” thereby allowing the mandrel and sleeve to move relative to the piston between the open and closed positions.
    Type: Application
    Filed: March 7, 2016
    Publication date: December 27, 2018
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Jason Earl DAVIS, William David HENDERSON
  • Publication number: 20180363417
    Abstract: A reclosable multi-zone isolation tool including a mandrel assembly with a pull-force lock feature. The tool includes an outer and inner tubular having an annular flow path defined there between, and a central flow path defined by the inner tubular. The annular flow path is in fluid communication with the first zone, while the central flow path is in fluid communication with the second zone. A sleeve is positioned in the annular flow path and moveable between an open and closed position. A mandrel assembly is slidingly positioned within the inner tubular and coupled to the sleeve to actuate the sleeve between the open and closed position only when a push force is applied. If a pull force is applied, the mandrel assembly “locks out,” thereby preventing movement of the sleeve.
    Type: Application
    Filed: March 7, 2016
    Publication date: December 20, 2018
    Inventors: Jason Earl Davis, William David Henderson
  • Patent number: 10113387
    Abstract: Certain aspects are directed to a testable isolation packer that sets and provides the ability to test upper and lower packer elements. In one aspect, the testable isolation packer includes at least two packer elements, a packer element setting system, a bypass system, and a testing subassembly. The testing subassembly generally includes a moveable element with an outer port and a sealing element, an inner mandrel with an inner port, and a shear mechanism to cause travel of the moveable element close the bypass system and to open the testing subassembly.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: October 30, 2018
    Assignee: Halliburton Energy Services, Inc.
    Inventors: William David Henderson, Timothy Edward Harms, William Mark Richards
  • Patent number: 10100144
    Abstract: The present invention provides a method of preparing an amine-functionalized (e.g. amine-terminated) polyaryletherketone polymer, or imide- or sulphone-copolymer thereof and amine-protected analogs thereof, said method comprising the step of polymerizing a monomer system in a reaction medium comprising a capping agent comprising —NR2, —NRH or a protected amine group.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: October 16, 2018
    Assignee: Ketonex Limited
    Inventors: Ian David Henderson Towle, Kaylie Jane Smith
  • Patent number: 10031178
    Abstract: A testing system includes a vacuum pump, testing equipment and a vibration device. A vacuum tray is configured to provide relative movement between a DUT and the vacuum pump, testing equipment and the vibration device. The vacuum tray includes a vacuum chamber configured to define a sealed vacuum environment around the DUT, and a DUT support carried by the vacuum chamber and configured to support the DUT within the chamber during testing thereof. The DUT support includes a pedestal configured to hold the DUT within the chamber during vibration testing, and an extension that extends outside the vacuum chamber and is configured to connect to the vibration device. An electrical test interface unit is carried by the vacuum chamber and configured to connect between the DUST and the test equipment, and a vacuum interface is carried by the vacuum chamber and configured to connect to the vacuum pump.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: July 24, 2018
    Assignee: Keysight Technologies, Inc.
    Inventor: David Henderson
  • Publication number: 20180183356
    Abstract: A semi-resonant actuator assembly includes a resonating body comprising a piezoelectric plate having a first length, a first width, and a first thickness, and an inactive plate having a second length substantially equal the first length, a second width substantially equal to the first width, and second thickness. A thickness of the resonating body is provided by a sum of the first thickness of the active piezoelectric plate and the second thickness of the inactive plate.
    Type: Application
    Filed: December 8, 2017
    Publication date: June 28, 2018
    Inventors: David A. Henderson, Qin Xu, Daniele Piazza, Eric Walkama
  • Publication number: 20180128074
    Abstract: Certain aspects are directed to a testable isolation packer that sets and provides the ability to test upper and lower packer elements. In one aspect, the testable isolation packer includes at least two packer elements, a packer element setting system, a bypass system, and a testing subassembly. The testing subassembly generally includes a moveable element with an outer port and a sealing element, an inner mandrel with an inner port, and a shear mechanism to cause travel of the moveable element close the bypass system and to open the testing subassembly.
    Type: Application
    Filed: December 8, 2017
    Publication date: May 10, 2018
    Inventors: William David Henderson, Timothy Edward Harms, William Mark Richards
  • Patent number: 9920587
    Abstract: Certain aspects are directed to a testable isolation packer that sets and provides the ability to test upper and lower packer elements. In one aspect, the testable isolation packer includes at least two packer elements, a packer element setting system, a bypass system, and a testing subassembly. The testing subassembly generally includes a moveable element with an outer port and a sealing element, an inner mandrel with an inner port, and a shear mechanism to cause travel of the moveable element close the bypass system and to open the testing subassembly.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: March 20, 2018
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: William David Henderson, Timothy Edward Harms, William Mark Richards
  • Publication number: 20180043437
    Abstract: A method for producing a metal powder that combines molten reducing metal and metal halide in a space that is substantially free of oxygen and water, wherein the molten reducing metal is sodium and/or potassium, or aluminum (or magnesium or titanium) and is present in a stoichiometric excess to the metal halide which is a solid or liquid, thereby producing metal particles and salt, removing unreacted reducing metal, optionally removing the salt, and recovering the metal powder, is described. A method for producing a metal masterbatch wherein the molten reducing metal is aluminum, magnesium, and/or titanium and after combining molten aluminum (or magnesium or titanium) and metal halide in the reaction space, substantially removing the produced metal salt to obtain the metal masterbatch which comprises at least a portion of the molten aluminum (or magnesium or titanium) and at least one metal also is described.
    Type: Application
    Filed: August 7, 2017
    Publication date: February 15, 2018
    Applicant: Nanoscale Powders, LLC
    Inventors: Donald Finnerty, David Henderson, John Koenitzer, Andrew Matheson, Richard Van Lieshout
  • Patent number: 9890941
    Abstract: A luminaire comprising a light source comprising a plurality of light emitting diodes (LEDs) and a combination heat spreader and heat sink disposed in thermal communication with the light source such that the combination heat spreader and heat sink facilitates transfer of heat away from the LEDs. The combination heat spreader and heat sink have an outer dimension that is larger than an opening defined by a nominally sized can light fixture and an opening defined by a nominally sized electrical junction box. A back surface of the combination heat spreader and heat sink is configured to permit the luminaire to be flush mounted on the mounting surface.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: February 13, 2018
    Assignee: Lighting Science Group Corporation
    Inventors: Mark Penley Boomgaarden, Michael Balestracci, Rick LeClair, Wei Sun, David Henderson, Shane Sullivan
  • Publication number: 20170253696
    Abstract: The present disclosure provides a process for producing a polymer, said process comprising polymerising a monomer system comprising a compound of formula: Ar—O—Ar—C(?O)—X—C(?O)—Ar—O—Ar in a reaction medium comprising a Lewis acid where: X is an aliphatic moiety and Ar is an aromatic moiety.
    Type: Application
    Filed: September 10, 2015
    Publication date: September 7, 2017
    Inventors: Ian David Henderson Towle, Kaylie Jane Smith
  • Patent number: 9739470
    Abstract: A luminaire includes a light source having a plurality of light emitting diodes (LEDs), a heat spreader, and a substantially ring-shaped trim plate. The heat spreader is disposed between and in thermal communication with the light source and the trim plate such that the heat spreader facilitates transfer of heat from the LEDs to the trim plate. The trim plate is structurally configured and disposed for dissipating heat generated by the light source. The trim plate has an outer dimension that is larger than: an opening defined by a nominally sized can light fixture; and, an opening defined by a nominally sized electrical junction box.
    Type: Grant
    Filed: September 22, 2014
    Date of Patent: August 22, 2017
    Assignee: Lighting Science Group Corporation
    Inventors: Mark Penley Boomgaarden, Michael Balestracci, Rick LeClair, Wei Sun, David Henderson, Shane Sullivan
  • Publication number: 20170229981
    Abstract: A lead screw actuator device includes a base configured to support a plurality of actuators. A first bridge is supported by one of the plurality of actuators and a second bridge is supported by another one of the plurality of actuators. A nut is supported by the first bridge and the second bridge and is rotatably coupled to a screw with a sliding contact friction between the screw and the nut. The plurality of actuators generate small movements of the first bridge, the second bridge, and the nut that produce relative rotation between the nut and the screw. A method of making a lead screw actuator device is also disclosed.
    Type: Application
    Filed: February 9, 2017
    Publication date: August 10, 2017
    Inventor: David A. Henderson
  • Patent number: 9714553
    Abstract: A well packer includes an expandable member carried on a mandrel, the mandrel including a groove formed on at least a portion of an outer radial surface of the mandrel; a back-up assembly carried on the mandrel adjacent the expandable member; and a fold back assembly carried on the mandrel adjacent the back-up assembly, the fold back assembly including a snap ring carried on the mandrel and adapted to move into the groove and adjust the expandable member into an expanded position in substantially sealing contact with a tubular.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: July 25, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Christopher Robert Delzell, William Mark Richards, William David Henderson, Bryon Mullen
  • Patent number: 9696236
    Abstract: A test apparatus includes a vibratory body that shakes a device under testing (DUT), a pedestal dedicated to support the DUT and disposed on the vibratory body, and a clamping mechanism operative to selectively clamp the pedestal to the vibratory body and release the pedestal from the vibratory body. The vibratory body and the pedestal define a cavity in which the clamping mechanism is disposed. The clamping mechanism includes a clamp ring and at least one locking element carried by the clamp ring so as to be displaceable in a radial direction relative to the clamp ring, at least one tang facing the at least one locking element in the radial direction, and a piston slidable in an axial direction relative to the clamp ring between a first position at which the pedestal is free from vibratory body and a second position at which the locking element is compressed between the piston and the tang.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: July 4, 2017
    Assignee: Keysight Technologies, Inc.
    Inventors: Thomas E. Berto, David Henderson
  • Patent number: 9683079
    Abstract: Particles of an amine-functionalized polyaryletherketone polymer or copolymer thereof. The amine-functionalized polyaryletherketone polymer or copolymer thereof is selected from the group consisting of: polyaryletherketone polymer with terminal amine or protected amine functional group(s); polyaryletherketone-imide copoplymer with terminal amine or protected amine functional group(s); and polyaryletherketone-sulphone copolymer with terminal amine or protected amine functional group(s).
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: June 20, 2017
    Assignees: Ketonex Limited, Cytec Industries Inc.
    Inventors: James Francis Pratte, Robin K Maskell, Ian David Henderson Towle, Kaylie Jane Smith
  • Publication number: 20170159925
    Abstract: A luminaire comprising a light source comprising a plurality of light emitting diodes (LEDs) and a combination heat spreader and heat sink disposed in thermal communication with the light source such that the combination heat spreader and heat sink facilitates transfer of heat away from the LEDs. The combination heat spreader and heat sink have an outer dimension that is larger than an opening defined by a nominally sized can light fixture and an opening defined by a nominally sized electrical junction box. A back surface of the combination heat spreader and heat sink is configured to permit the luminaire to be flush mounted on the mounting surface.
    Type: Application
    Filed: December 16, 2016
    Publication date: June 8, 2017
    Applicant: Lighting Science Group Corporation
    Inventors: Mark Penley Boomgaarden, Michael Balestracci, Rick LeClair, Wei Sun, David Henderson, Shane Sullivan